Xiamen Topbon Industry Co., Ltd was established in 2005 in Xiamen, which specializes in manufacturing and trading micro silica. We have more than 4 manufacturers. And we could provide more than 50,000T micro silica every year with superior quality and competitive price. Our micro silica contains 85% to 97% SiO2, which could be widely used in concrete, Refractory, Mortar and so on. If you have any enquiry, please feel free to contact me, I am always here to service you. Thank you!